Printing press



6 Sheets-Sheep 1.

(N 0 Modei.)

J'.'L .cox. PRINTING PRESS;

Patents Ma,y .14 18-95.

(No Model.) Y 6 Sheets-Sheet 2.

J. L. COX. PRINTING PRESS.

Patei zed May 14, 1895.

J ILL. 0 CZZZ ZL ZfZZg fnzzenaars e Sheets-Sheet a. J. ,L. 00x. IPRINTING PRESS. Patented May 14, 1895.

(No Model.)

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(No Model.) 6 Sheets-Sheet 4.

. J L. 00X.

PRINTING PRESS.

Patented M 14 ML s w J. L. 00X. PRINTING PRESS.

6 Sheets-Sheet 5.

(N 0 Model.)

- Patented May 14, 1895.

Cox

fizventar: Jose aivL.

(No Model.) 6 Sheets- Sheet 6.

J. L. 00X.

PRINTING PRESS. I No. 539,356. Patented May 14:, 1895 I nvento 1 Attorneys I UNITED STATES PATENT Genres.

JOSEPH L. COX, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO THE DUPLEXPRINTING PRESS COMPANY, OF SAME PLACE.

PRINTING-PRESS.

' SPECIFICATION forming part of Letters Patent No. 539,356, dated May14,1 895.

Application filed April 5, 1894. Serial No. 506,518. (No model.)

To aZZ whom it may concern:

Be it known that I, JOSEPH L. COX, ofBattle Creek, in the county ofCalhoun and.State of Michigan, have invented certain new and usefulImprovements in Printing Presses; and I do hereby declare that thefollowing is a full, clear, and exact description thereof,referencebeing had to the accompanying draw-v ings, and to the letters ofreference-marked Io thereon, which form part of this specification.

This invention is an improved machine for perfecting sheets of paperfrom a web. Its distinguishing characteristics are, first, tworeciprocating traveling impression cylinders I 5 cooperating with twooppositelyre'ciprocat ing type beds; second, novel means for throw-, ingthe cylinders alternately on and off impression third, novel mechanismwhereby each cylinder rotates continuously in but one direction, whilebeing traveled back and forth, and whereby they are reciprocally drivingand driven alternately; fourth, the inking system; fifth, the automaticweb cutting and feeding mechanism; sixth, the automatic delivery;

seventh, the capacity for severing and printing sheets of differentlengths. Each of these several characteristic features embodies bothnovel construction and combination of ele-' ments, and these severalsub-combinations 0 are united in one complete machine, the essentialfeatures, sub-combinations, and general combinations of my inventionbeing stated in the claims forming part of this specification. Referringto the accompanying drawings,

Figure 1 represents a side elevation of the complete machine, exceptthat part of the gripper trip-pin shifting devices is broken away forthe sake of clearness. Fig. 2 is a longitudinal central vertical sectionthereof.

4c Fig. 3 represents a side elevation, opposite to that of Fig. 1, ofthe right-hand end of the machine, that sideof the carriage beingremoved and the frame partially broken away.

Fig. 4 is an end view of the two'cylinders re- 5 moved from the frame,showing the mechanism for opening and closing the grippers at the propertimes and points. Fig. 4 is a de tail sectional View on line y y of Fig.t, Fig.

5 is a detail vertical transverse sectional View on line was of Fig. 1.-Fig. 6 is a plan view of one of the yokes for carrying the cylinders.

. on line 00 roof, Fig. 1. g

view of a portion of one of the guides Y. Flg.

Fig. 7 is a partial side view,*partly in section, of aportion of thecarriage, sho wingthe means for raising and lowering the cylinders. Fig.8 is a horizontal sectional view taken through the dotted line 8 8 shownin Fig. 7. Fig. 9 is a central longitudinal sectional view through thepaper-feeding mechanism and table. Fig. 10 isa detail view of the shaftcarrying the knife. Fig. 11 is a detail view of the swing- 6o ing adjustable arm. Fig. 12 is a diagrammatic sectional View showing thecylinders in the position at the beginningof impression. Fig. 13 is asimilar view showing the cylinders moved the next step forward with halfthe paper imprinted and-the gripperson the rear cylinder taking thesheet from the front cylinder. Figs. 14 and 15 are similar views showingthe next two positions of the cylinders before they reach position shownin Figs. 1 and 7c 2. Fig. 16 is a detail vertical sectional view Fig. 17is a detail plan 18 is a detail view of an automatic clutch for thesheet-delivery carriage. Fig. 19 is a detail side view of apart of themain frame and carriage, showing the trip-pin operating devices.

The press contains two type beds arranged end to end in the same plane,and together 8c reciprocated back and forth by means of pitmen and crankwheels. Over these beds are reciprocated, by similar means in directionsopposite the movements of the beds, two impression cylinders, whichrespectively co-operate with forms on the respective beds,'and a throwofi mechanism is employed so that. while the cylinders travel over bothbeds each will only co-act with the proper one. By having both beds andclyinders reciprocate in go opposite directions, the stroke of each isshortened, one half of what would ordinarily be required, if the otherwere stationary. The cylinders are arranged close together, so that asheet printed by the first cylinder operating 5 on the forms on one bedis immediately transferred, reversedupon and perfected by, the secondcylinder co-acting with the forms on the second bed.

To facilitate the feeding, transfer, and de- ICC liveryof the sheet, thecylinders are geared together, andby suitable mechanism, are alternatelydisengaged from their bed-racks, and therefore can be, and are,continuously rotated in but one direction, during their entirereciprocal movement, one cylinder serving to drive the other on onestroke, and then being driven by such other 9n the return stroke. Thisarrangement is especially advantageous; as there isno reversal of motionof the cylinders. The paper is fed in from a to web-roll, and severed byan adjustable and variable cutting mechanism, just prior to its graspingby the first cylinder, and the sheets are delivered at the same end ofpress where fed in. r

In the press shown a plate distribution of ample extent to insure finework is provided, by attaching distributing tables to the outer ends ofthe beds, which tables operate ductor and distributing rollers; the inkbeing sup- 2o plied from fountains at each end of press. Any number ofdistributing rollers can be arranged to operate on the tables, fromwhich the ink is taken and applied to the type by form rollers mountedon opposite sides of the reciprocating cylinder carriage. Ashortdistributing table may also be used intermediate the beds, andalternately contacted by said form rollers. Thus the forms are freshlyinked before each impression, or at each stroke of the cylinders.

hen the parts are in the position shown in Fig. 1, the cylinders beingat the end of their right hand or backward, stroke, and the beds at theend of their forward or left hand stroke, the front cylinder is inposition to receive a sheet from the feed table, and is mechanicallythrown off. The rear cylinder, has just completed its printing stroke,and is clear of the forms; and will not contact with 42 the type facesas a suflicient portion of its periphery is reduced in diameter toinsure clearance of the forms until its throw off mechanism has liftedit off the type plane The same is true of the front cylinder when 45 ithas finished its impression stroke in position shown in Fig. 14. As thecylinders start forward, and the beds backward, the front cylindergrippers catch the edge of a sheet and take it from the feed board, andduring the first half of the forward stroke the front cylinder isgradually lowered to printing position and the rear cylinder graduallyraised or thrown off, so that neither cylinder contacts with the formson the rear bed on the forward stroke, but the front cylinder doescontact with the forms on the forward bed and the sheet is imprintedthereon, the impression being taken during the second half of theforward stroke and completed when the cylinders reach the end of suchstroke; the beds simultaneously reaching the end of their back stroke.

When the front cylinder has made threequarters of a revolution, after ithas taken a sheet, and during the printing of such sheet,

its grippers release the sheet andsiinultaneonslythe grippers on therear cylinder, nip the teases sheet, which then begins to transfer tothe rear cylinder; and when the cylinders reach the end of the forwardstroke, the sheet is lying partly on the rear cylinder and partly underthe front cylinder, (if the sheet be longer than one quarter of thecircumference of the cylinders.) As the cylinders start backward, andduring the first portion of the backward movement, the front cylinder ismechanically raised and the rear cylinderlowered, so that neithercylinder contacts the forward bed du ring their backward|novement,butthe rear cylinder contacts the forms on the rear bed andpresents the unprinted side of the sheet thereto, the perfectedimpression being completed as the cylinders reach the limit of theirback- Ward stroke, and the beds the limit of their forward stroke.During the next forward stroke of the cylinders the front cylinder takesanother sheet from the feed board, and the perfected sheet is deliveredfrom the rear cylinder by a simple apparatus.

This general description will suffice to explain the principles ofconstruction of the press and its mode of operation and the fol lowingis a detailed description of the press shown in drawings, parts therein,being indicated by letters of reference marked thereon.

The Beds and Bed Racks.

A, A, are two flat beds, arranged in same plane, end to end, and rigidlyunited, virtually one bed with two form-holding surfaces. These beds aremounted on bed-supports CL of any suitable construction, so that theycan be reciprocated endwise, but do not touch the side frames of themachine. They are re ciprocated by pitmen Z9 connected to wristpins b oncrank gears 12, mounted ona shaft B journaled in suitable bearingsbetween the side frames of the press, said crank wheels also beingbetween the side frames. The other ends of pitmen are connected to armsa depending from bed A, or other suitable partof the beds. Gears Z) aredriven by pinions 0 on a transverse shaft 0 journaled in bearings on theside-frames, and otherwise supported between frames, which in turn isdriven from any suitable motive power. As shown shaft G is driven byspeed reducing gearing from a stub shaft 0 mounted in bearings at oneside of the press, and driven by belt and pulleys from a motor. Notshown.

On the inner face of each side frame of the press, parallel with anddirectly opposite, the side edges of the beds, a bar D is secured so asto be vertically movable, but longitudinally immovable, in any suitablemanner, as by bolts and slots, as shown in Figs. 2 and 3. These barshave lateral flanges D on their upper inner edges which fit intocorresponding grooves 01 in the sides of the bed racks d,d',respectively which racks, therefore, move vertically with the bars,'butcan be reciprocated thereon, by means of retaining plates A fastened tothe ends of the beds as shown.

The bed-racks,.it will be understood, recipi'ocate with the beds, butare not supported thereby, and are vertically movable. The bars D aresupported on toggles D the upper members of which are pivoted to thebars, and their lower members to the side frames, as shown. The severaltoggles, on the same side of machine, are also connected by and to aconnecting rod D by which they can be closed or opened simultaneously,and therefore raise or lower the connected bar D and its bed-rack. Thelower members of the toggles nearest shaft 0, are fixed on stub shafts cjournaled in the side frames and on the outer ends of each is an arm econnected by a link 6 to one end of an oscillating lever e fulcrumed ona bearing on the side of frame, the other endof said lever carrying afriction roller e running in a cam groove E in a disk E ex terior to themain frame, mounted on a shaft E jourualed in the main frame aboveshaft'O. These cam grooves are arranged to oscillate levers esimultaneously in opposite directions, twice during each reciprocationofth'e'beds; i. e when the beds reach their extreme limits of travel andare reversingtheir motion. Thus the bed racks on opposite sides of thebeds, will be alternately elevated and depressed, and one rack elevatedas the other is depressed.

The Cylinders and Throwofi Mechanism.

Two cylinders F, F, are journaled side by side in the extremities ofshort oscillating bars g, g, centrally pivoted upon uprights rising fromreciprocating carriers G, one at each side of the press, guided in waysG on the side frames thereof beside and exterior to the beds as shown.Below the ends of each bar g are elevated screws g, 9 mounted in thecarriers, and operated by suitable mechanism so that one will be raisedand the other lowered simultaneously. As the upper ends of said screwscontact the ends of the superimposed bar 9, the latter will be rocked,and one of the cylinders carried thereby will be accordingly lowered,and the other simultaneous y depressed. I

The screws g, 9 are respectively right and left handed, and'have heads 9which contact opposite ends of bar g, and are only threaded near theirupper ends, their lower ends being cylindrical. The threaded portions ofthe screws engage threaded boxings g which are set into sockets in thecarriers, and the lower cylindrical-portions of the screws enter cylinonthe ends of a reciprocating bar or rack H which is secured to the sideof carriage by loops or guide caps G This bar is reciprocated back andforth atproper times, by means of a cam groove 1 in the inner face of agear Wheel I mounted on a stub shaft I attached to the side of thecarrier below the fulcrum of bar 9, rack bar H being yoked around thestub-shaft, as shown, and

having a friction roller H running in the groove 1'.

Gear I is rotated by a pinion Z mounted on a stub shaft 1' (which mayalso formthe fulcrum of bar g) which receives its motion from a pinionc'on the outer end of the front cylinder shaft or gudgeon. The mechanismfor oscillating the'bars g should be duplicated on each side of thepress.

The carriers are reciprocated, simultaneously with the beds, butoppositely thereto, by means of pitmen G3 that are connected thereto,and to wrist pins on crank gear wheels E mounted on'shaft E, and drivenby pinions C on shaft 0. The cam disks E may be fastened to, or formedwith,'said gears, if desired.

/ Cam gear I is so adjusted, and its driving gearing so timed, that itbegins to move bar H as the carriers start on the forward stroke,

"and continues to move said rack during the time the crank wheels E aremaking one quarter of a'revolution (or during the first half of theforward stroke of the carriers) and then holds the bar stationary duringthe last half of the stroke while crank wheels turn another quarterduring the return stroke of the carriers; The rack-bar H is movedbackward, during the first half of the stroke (third quarter'turn ofcrank wheels E and then is held stationary during the last half ofstroke (until the crank wheels have finished the last quarter turn, andcompleted one revolution).

'At .each movement of the rack bar, one cylinket may render unnecessarysuch reduction) in order to'give me ample time to operate the throw offdevices gradually as described; but by constructing the throw offactuating mechanisms so that the bars 9 are oscillated more rapidly atthe beginning of the strokes of the cylinders,-the cylinders could be ofequal diameters throughout.

The cylinders are provided with gripper fingers F mounted on rock shaftsas usual.

On the outer'end of each gripper-shaft, at one end of each cyliuder,-are crank arms F to which are pivotally connected short rodsZ playingthroughrocking eyes Z on the ends of the cylinders, and springs Z arestrung on the rods Zv intermediate said eyes andarms l3 gage trip-pinsto open and close the grippers. The T-head of cylinder F contactsalternately trip pins F and F which are automatically shifted at propertimes into position to engage of position.

The trip pins F and F are mounted in the upper portion of the carriageand shifted at the proper time into position to be engaged by theT-heads on cylinders F and F when the gripper sockets on both cylindersare uppermost, and the cylinders just beginning their forward stroke.These trip pins F F, are movable and can be shifted longitudinally inand out of position to engage the T-heads by means of levers Y pivotedon arms 011 the carriage (see Figs. 4 and 17) one end of each leverengaging a grooved-head on the adjoining pin, and the upper end of thelever standing in position to engage a cam Y secured on the main framenear the feedboard. The lower trip-pins F and F are both fixed to blockor plate y secured on the inner end of a rod y which passes through abore in the adjoining stub-shaft i (or fulcrum pin of the adjoining barg) and thus extends to the outside of the carriage. The outer end of rody is pivotally connected to a lever 3 the upper end of which is pivotedto a bracket arm g on the carriage (or other proper point), and thelower end of said lever (3 is bifurcated to embrace the edge of a camdisk WV that is made fast to and rotates with pinion I. (See Fig. 16.)The edge of disk W is Wavedor undulated so that the lever y will bevibrated to shift rod y in and out once during each reciprocation (tworevolutions) of the cylinders;-it being remembered that pinion I onlymakes one revolution for two revolutions (one complete reciprocation) ofthe cylinders.

The cam Y may be in a grooved block so that the ends of levers Yareconfined in the groove therein when the cylinders are at the feed end ofpress and when in this position the trip-pins F F are projected inposition to engage the T-heads.

When the cylinders are in the position indicated in Fig. 1 the gripperfingers on cylinder F are open and those on cylinder F are stillretaining their nip on the sheet-but are just ready to be opened by thisaction of this T-head and trip pin F in order to allow the sheet tocommence its delivery immediately upon the forward movement of thecylinders. Now starting with the cylinders in the position shown in Fig.1, the action of the gripper mechanism is as follows, (one sheet havingbeen already perfected As the cylinders start forward the gripperfingers on the rear cylinder are opened and the perfected sheet thereonis delivered as hereinafter described.

The gripper fingers of the front cylinder are closed upon the edge ofthe sheet lying on the feed board as the cylinders start forward-and asthe carriage moves on (away from cam block Y, the levers Y are shiftedby cam Y so as to retract trip-pins F F; which remain retracted duringthe time the levers Y are disengaged from the cam groove. As thecylinders travel forward pins F and F are thrown into position to engagethe T- heads, and consequently when the cylinders have made threefourths of a revolution in their forward stroke (at which time they arein the position indicated in Fig. 13) the fingers on cylinder F areopened releasing the sheet, and the fingers on cylinder F aresimultaneously closed upon the sheet, which is then transferred to andreversed upon cylinder F as described. The trip-pins F F are thenretracted out of position to trip the T- heads, and remain so until thenext forward stroke of the cylinders. As the cylinders near the end oftheir return stroke toward the feed board levers Y are again tripped bycam Y so as to throw pins F F into position to trip the gripper fingerson the next forward stroke of the cylinders as described.

In order to facilitate the feed or transfer of the sheet from the feedboard to the front cylinder and to take up the sheet on the feed boardat a speed equal to or greater than the infeed of the web, I arrange thetrip pin F and the feed board, so that the grippers on cylinder F do notclose upon the edge of the sheet until the surface of the cylinder isrotating at a speed equal to or slightly greater than the speed of theinfed sheet Thus the cylinder will nip the sheet after it has startedforward. This enables me to feed in the sheet and take it up as it isfed in without its buckling or wrinkling on the boardor at any timebeing stopped in its inward movement. The practical advantage of such anarrangement is obvious, and furthermore as no severed sheet is allowedto lie at rest on the feed board there is no obstruction in the way ofthe incoming sheet and the rotary infeed and cutters can be operatedrapidly. Other suitable gripper finger tripping mechanism may beemployed if desired to actuate the fingers at the proper times. Thecylinders are geared together by intermeshing gearsf, at one end only,and cylinder F has a gearf meshing with rack d, and cylinder F a gear fmeshing with rack d. Now as rack d is elevated only during the forwardstroke of the cylinders, cylinder F is free to rotate contrary to itstravel, and consequently is driven by cylinder F. When the cylindersreach the limit of the forward stroke, rack (Z is lowered and rack draised into engagement with gear f of cylinder F. This leaves cylinder Ffree to rotate contrary to its travel, during the back stroke of thecylinders, while times when the bed racks are being moved into and outof gear, as, at or near the end of travel of the cylinders there is amoment of time when neither of the bed racks is fully in mesh with thecylinder gears. The register teeth at the end of press toward whichcylinders are traveling at such time contact with shoulders F in thebearers of the adjoining cylinder (formed by cutting away a portion ofeach bearer as indicated in Fig. 3), and insure the continued and properrotation of the cylinders, or prevent back lash thereof, until the bedracks have been properly shifted.

. The cutaway portion of the cylinder prevents contact with the registertooth'until it is in operative position, and this clearance is furtherfacilitated. by the fact that each cylinder after covering the form andreaching its end of travel immediately begins to rise from the bearerline by the action of the throw-off devices. The cylinder bearers arecut away however, at a point where no ill results can follow, as thatportion of the cylinder does not contact with the forms.

The Inki'ng System. Y

J, J, are ink distributing tables, attached to each end of the bedframe, and moving therewith. J is an intermediate ink distributingsurface between the beds. At each end of the press is a fountain K,whose roll is operated by an ordinary ratchet and paw], the pawl beingcarried by a vibrating arm K connected by a link K to one of a pair oflevers K which carry a ductor roller K adapted to alternately contactthe fountainv roll and a drum K Above this drum is a second ductor Kmounted in the ends of levers K, which are connected to levers K bylinks K and are also provided with friction rollers K arranged tocontact with cams J on the sides of adjoining table J, when it is movedto that end of press.

Thus as the beds near the ends of their outer stroke, the cams J,contact rollers K and raise levers K thereby lifting ductor K5, awayfrom the drum K and allowing it to rotate partly over the table as thelatter moves thereunder; and simultaneously with lifting of ductor Kductor K is raised so as to carry a fresh supply of ink to drum K andthe fountain roller is rotated also. As the table moves back, theductors drop upon the drum and fountain roll respectively. Drum Kadjoining shaft E is rotated by means of a pair of gears in from a gearE on shaft E, and the other drum K is rotated by means of bevel gears itfrom a shaft 10 extending longitudinally of the press below the beds,and driven bya bevel gear 10 from abevel gear E on shaft E. Gears EE maybe formed in one piece.

The ink deposited upon tables J is distributed thereon by the angledistributing rollers 3,1, and straight distributersj and is supplied tothe forms by form rollers 7 mounted upon the carriers at the outer sidesof the cylinders, as shown. A distributer rollj can be mounted above andbetween the form rollers, and these may all be driven bysuitablyarranged gearing, not forming part of this invention, from small rackssecured to the beds or in other suitable manner. The form rollers inkthe forms during both the movements of the cylinders, and in advance ofthe printing.

The Feed.

At the end of press above the driving shafts, are located the feed anddelivery mechanisms, mounted in an upward extension of the main frame.

-The web .is led in from a paper roll,"not

shown, over a roller A to and under a roller L and between it and alower cuttingcylin-' der L, up over and partly around said cylinder,between it and another roller L, the web being pressed to the cylinderby endless tapes L running over rollers L and a third roller L which ismounted in adjustable arms L arranged so that it can be adjusted toregulate the tension of the tapes. Above the lower cutting cylinder isthe co-acting cutting cylinder or shaft M carrying an adj ustablecutting blade M. This shaft or cylinder M is geared to make onerevolution for each revolution of the crank wheels, or reciprocation ofprinting cylinders, and is driven by a train of gears from one of thegear-crank wheels E as shown. In detail, it has a pinion m'on one end,which meshes with an adjustable pinion m, meshing with a gear m on astub shaft that extends through the side frame andh'as a similar sizedgear on on its inner end, which meshes with a gear m that meshes with apinion m on a stub shaft journaled in the side-frame, and on the outerend of said shaft is a gear m which meshes with the adjoining crank-gearwheel E The pinion m is mounted on an adjustable segment 1717, which ispivoted on the stub shaft carrying gears m m so that pinion mcan bemoved in relation to said shaft without disengaging it from gear m Thesegment can be locked by a bolt m passing through a slot m therein asshown.

On the other end of shaft M, opposite gear m, is detachably secured apinion l, which meshes with a pinion Z fixed on the adjoining end ofcylinder L. The lower cutting cylinder L has a number of longitudinalslots (say twentyfive) one inch apart, and its gear Z has two ontheshaft M, to drive cylinder L any de sired length of sheet can be out.For every inch of paper less than twenty-five, the change gearlshouldhave two teeth less, and for every inch of paper over twenty-five thechange gear should have two teeth more. The slots in thecylinder L,being but one inch apart, some slots therein will always register withthe knife, whether the sheet to be cut is long or short. The shaft M isjournaled in boxes M adjustable toward or from the cylinder L, and whenthe gear Z is changed, it is necessary to adjust shaft M toward or fromthe cylinder so as to make the substituted gear 1 mesh with gear Z oncylinder L, and pinion m is shifted by the segmentm to permit thisadjustment; yet can still mesh with pinions m, m \Vhen shaft M isshifted the knife M is adjusted so as to properly co-act with cylinderL.

The cutting cylinders, and feeding mechanism, are carried in frames Mwhich are adjustably mounted on the main frame so that when shortersheets are to be cut the feed devices are moved toward the cylinder, andwhen longer sheets are to be cut the feed devices are moved from thecylinders. The frames can be adjusted by means of screwshafts M engagingthreaded sockets in said frame, and operated by means of bevel gearing Mfrom a transverse shaft M at the end of press. The adjustable pinion malso compensates for the adjustments of the feed devices, and is shiftedup or down as pinion m is moved nearer to or farther from pinion m (theshaft of the latter being fixedly journaled in the main frame.) The feedtable N is pivoted to the frames M and is provided with telescopingfingers N on its lower edge, which can be lengthened or shortened,according to the length of sheet being fed, and the position offrames MThe table is elevated and lowered at the proper time by means of an armn, mounted on a shaft at which is rocked by means of a crank arm nhaving a friction roller on its end running in a cam groove 01 in theback of gear m or a plate'attached to said gear or its shaft, as shown.

The Delivery.

The delivery mechanism consists of two pairs of upper and lower taperollers O, 0, journaled in suitable bearings on and near opposite endsof a sheet carriage P, the front end of which is detachably connected tothe carriers, near the tops of the rear cylinder, as shown at P, or inother suitable manner, and the rear end is provided with rollers Prunning upon ways P attached to the side frames of the press above themain driving shafts and below the feed mechanisms. Friction rollersp arearranged between these ways and the side frames, and support the sidepieces 1) of carriage P when it is disengaged from the carriers andmoved back out of the way, as for instance when the pressinan isplacinr. forms 011 the rear bed. Endless tapes 0 0 run over theserollers 0, their meeting sides being about in line with the tops of thecylinders as shown. The upper inner roller 0 lies close to roller F andthe inner lower roller 0 lies close to the periphery of the cylinder iF, when the carriage P is fastened to the cylinder carriage; and tobridge the space between the top of the cylinder and top of roller 0 adirector or stripper q is employed. When the sheet is released by thegripper fingers of cylinder F the edge of sheet passes over saiddirector and between the tapes 0, 0, by which it is carried out andsupported on the carriage P, during the forward travel of the cylinders,the rotation of cylinder F assisting in the delivery of the sheet. Thenas the carriage moves back the tapes 0, 0, are stopped, and when thecylinders have reached the end of their backward stroke the sheetcarriage is just above the delivery table R. As the cylinders again moveforward, the tapes 0, 0, are again traveled and the sheet carriedthereby is dropped upon the table R, the carriage virtually slippingfrom beneath the sheet, and at the same time the perfected sheet broughtback on cylinder F is given up to these tapes, so as one sheet isdropped on the table R another is drawn into the carriage P. The tapesare traveled at the proper times by means of a pinion s mounted looselyon the shaft of the outer roller 0 and meshing with an inverted rack Sfastened to the side frame of the press. The pinion s, operates theroller when the carriage is moved forward, by means of any suitableautomatic clutch device or ratchet which clutch or ratchet isautomatically disengaged when the carriage travels backward.

The operations of the several parts, separately and together, issufficiently clear from the foregoing description, and therefore What Iclaim as new, and desire to secure by Letters Patent, is-

1. In a printing press the combination of type beds with a pair ofoscillating bars, a pair of cylinders mounted on opposite ends of saidbars, and means for reciprocating and oscillating said bars,substantially as described.

2. In a printing press the combination of type beds a pair ofoscillating bars, a pair of reciprocating carriers carrying said bars,and a pair of cylinders mounted on opposite ends of said bars, withmechanism for oscillating said bars, substantially as described.

3. Ina printing press 'the combination of type beds a pair ofoscillating bars, reciprocating carriers carrying saidbars, and cylinders mounted on opposite ends of said bars, adjusting screws under theopposite ends of type beds a pair of oscillating bars, reciprocatingcarriers carrying them, and cylinders mounted on opposite ends of saidbars; with adjusting screwsunder opposite ends'of each bar, and pinionsand sliding racks for simultaneously rotating said screws, a cam forreciprocating said bar mounted on the carrier and gearing for operatingsaid cam from the cylinders, substantially as described.

6. The'combination in a printing press of two reciprocating beds, andtwo oppositely reciprocating cylinders, with a bed-rack for eachcylinder meshing with a gear thereon, and

mechanism for alternately throwing the said racks into engagement withand alternately disengaging them from, their cylinders, substantially asset forth.

7. The combination with the beds and cylinders, of the bed racks meshingwith the cylinder gears, the toggles supporting said racks, andmechanism for operating said toggles so as to alternately raise andlower the racks, substantially as and for the purpose set forth.

8. The combination with the beds and cylinders, the vertically movablebars, carrying the bed racks and mechanism for raisingone bar andsimultaneously lowering the other, alternately, and gears on thecylinders respectively meshing with the bed racks substantiallyasdescribed.

9. The combination of a reciprocating bed and oppositely reciprocatingtraveling cylinder, with a bed rack reciprocating with the bed, andnon-reciprocating mechanism for elevating and lowering said rack, intoand out of engagement with the cylinder gear, substantially asspecified.

10. The combination of two reciprocating beds, and two oppositelyreciprocating traveling cylinders; and mechanism for alternatelythrowing off the cylinders, so' that they only contact with the properbed; with bed racks reciprocating with said bed and meshing withcylinder gears, vertically movable bars supporting said racks, andmechanism for alternately raising and lowering the racks, substantiallyas described.

11. The combination with a pair of reciprocating type beds; with a pairof oppositely reciprocating carriers, oscillating bars mounted on saidcarriers, cylinders carried by said bars, and means for oscillating thebars, substantially as and for the purpose set forth.

12. The combination with a pair of reciprocating type beds; with a pairof oppositely reciprocating carriers, oscillating bars mounted on saidcarriers, cylinders carried by said bars, and means for oscillating thebars, and mechanism whereby each cylinder is continuously rotated in butone direction, substantially as and for the purpose set forth.

13. The combination of a pair of reciprocating type beds, and racksreciprocated therewith; the pair of oppositely reciprocating carriers,the oscillating bars carried thereby, the cylinders mounted on saidbars,.and respectively geared to the opposite racks, and means foroscillating said bars; with mechanism for alternately throwing the bedracks into engagement with the corresponding cylinder gear, allsubstantially as set forth.

14. In a printing press the combination of a pair of reciprocating typebeds, the bedracks reciprocated therewith and the vertically movablenon-reciprocating bars supporting said racks and mechanism foralternately lowering said bars; with a pair of oppositelyreciprocatingcylinders, intergeared, and respectively geared to theopposite bed racks; and mechanism for alternately throwing saidcylinders off impression so that one prints on the forward stroke fromforms on onebed, the other on the backward stroke from forms on theother bed, substantially as described.

15. The combination of a pair of reciprocating beds, ink tables at eachend of and between said beds, ink fountains and distributing rolls ateach end of 'thebeds, and ductor mechanism whereby the ink is suppliedfrom the fountains to the drums and thence to the a I end tables; andstationary distributing rolls above thetables; with a pair ofreciprocating cylinders, and forminking rollers mounted at each sidethereof, all substantially as and for the purpose described.

16. On a printing press thecombination of a typebed a reciprocatingcylinder, a sheet delivery carriage connected therewith, endless tapeson said carriage for receiving the sheet from the cylinder, a stripperfor directing sheets from the cylinderto the tapes a pinion on saidcarriage meshing with a stationary rack, and clutch mechanism fortransmitting motion from the pinion to the taperollers when the carriagetravels in one direction, substantially as described.

17. In a printing press the combination of a type bed a reciprocatingcylinder rotated continuously in but one direction, and mechanism forsupplying sheets of paper thereto; with a delivery carriage connected toand traveling with said cylinder, endless sheet carrying tapes on saidcarriage, tapes and a stripper for directing a sheet from the cylinderinto said carrying tapes, and mechanism lever mounted on the carriageforsimultaneously operating the adjoining trip-pins; and theindependentoscillating levers for respectively operating the other pins; and astationary cam guide for actuating said oscillating levers,substantially as described.

19. In a printing press the combination of two reciprocating beds, andtwo oppositely reciprocating cylinders, having gears on opposite ends;with bed-racks meshing with said gears and reciprocating with the bedsand mechanism for alternately raising and lowering the bed racks, sothat only one is in engagement with its cylinder at a time,substantially as described.

20. In a printing press the combination of two reciprocating beds, andtwo oppositely reciprocating cylinders, having gears on opposite ends;with bed racks meshing with said gears and mechanism for alternatelyraising and lowering the bed racks, so that only one is in engagementwith its cylinders at a time, with gearing between said cylinderswhereby each cylinder is rotated continuously in but one direction,opposite to the rotation of the other cylinder, substantially asdescribed.

21. The combination of two connected reciprocating beds, toothed crankwheels, mounted on one shaft, and pitmen for reciprocating the beds,located below the beds and between the side frames of the press; and twooppositely reciprocating cylinders, and toothed crank wheels, mounted onanother shaft, and pitmen for reciprocating the cylinders, locatedexterior to the side frames; and a driving shaft and pinions thereonmeshing with said toothed crank wheels, substantially as described.

22. The combination of the reciprocating gripper cylinder with atrip-pin mounted on the cylinder carriage having a grooved collar, alever mounted on the carriage engaging said collar at one end, and astationary guide or cam arranged to be engaged by and rock said leverthereby retracting or projecting said pin, substantially as described.

23. The combination of the pairof reciprocating gripper cylinders, theco-acting type beds, and means for alternately throwing said cylinderson and off impression; with the trip-pins for the grippers, mounted onthe cylinder carriage and means substantially as described forprojecting or retracting the pins as required in the operation of thepress, substantially as specified.

24. The combination with the reciprocating beds, and the co-actingoppositely reciprocating cylinders; of the bed racks reciprocating withthe bed, respectively meshing with a gear on one cylinder; and the bedbearers each having an end tooth adapted to engage a shoulder in thecylinder bearer and prevent backward movements of the cylinders wheneither rack is lowered; and mechanism for alternately raising andlowering said racks, substantially as set forth.

In testimony that I claim the foregoing as my own I aiiix my signaturein presence of two witnesses.

JOSEPH L. COX. Witnesses:

OHAs. ZANG, RICHARD MCCARTHY.

